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History[]
Jurassic Park[]
Alexis Murphy is first seen in the novel coming out of a helicopter with her older brother, Tim Murphy. Grant guessed she was no older than eight years old. Donald Gennaro expressed his outrage that John Hammond would allow children on the test tour, though in the film he seems to not mind it at all. Regardless, the children tagged along. Lex accompanied her brother and Ed Regis in the first car as they began the tour. She quickly became bored watching the dinosaurs do nothing and was glad to hear they were going back.
She is portrayed as an extremely whiny, irritating, unpleasant little girl with a love of sports. She hates dinosaurs and teases Tim about his fascination for them in the same way that their father does. Due to all of this, she nearly gets herself and others killed multiple times yet displays no change in character.
Unfortunately, Dennis Nedry took the opportunity to cut the power off and the T. rex seized that opportunity to break through the fence. Lex and Tim stayed in the car as the dinosaur picked it up. Lex fell out of the car and was knocked unconscious. Lex awoke in the middle on an empty road to find Alan Grant at the edge. They eventually found Tim and Ed Regis, but Regis was killed before they could do anything about it.
The three began to walk through the park, trying to trip the motion detectors. The three spent the night in a storage room where Lex befriended a juvenile Triceratops. The group eventually found a raft and managed to out-paddle the T. rex. The group follows the river back to the main entrance and finally, after one final encounter with the T. rex, made it back to safety.
Alan Grant put the two kids in the cafeteria while he worked with the other adults. The kitchen was ambushed by a single Velociraptor that the siblings managed to trap inside a meat locker. Before they managed to trap the dinosaur, Tim is in danger and Lex sacrificed herself to saved her brother which proves her love for Tim. Luckily, they both are safe and managed to ran away. Knowing that there was nowhere safe, they began to help and were met up with Grant and Gennaro as they finished off the raptors.
The building was finally safe as they returned to the Control Room and play with the sound controls creating a Tyrannosaurus rex roar, frightening John Hammond who was walking outside. Lex and her brother were picked up by one of the helicopters before the island was bombed. Lex appeared playing in the hotel pool with her brother while Dr. Marty Guitierrez explained that the children would be allowed to go home, but the rest would be staying in Costa Rica indefinitely.
The Lost World[]
Lex is not mentioned by name in the sequel but it is stated that she is in prep school.